// 日期只保留年月日
export function formatDate(date) {
    var d = new Date(date),
        month = '' + (d.getMonth() + 1),
        day = '' + d.getDate(),
        year = d.getFullYear()
    if (month.length < 2) month = '0' + month
    if (day.length < 2) day = '0' + day
    return [year, month, day].join('-')
}